Facing Issue while Decoding in C++. #82

The Data i am getting from Exchange is like this ex: "Ýÿ”20181009-06:49:09.66±±�jÏ€€€‚_��À€ôCOCUDAKL20DEC201¸2972³ø��2?IÁ€€€€€€€s•€€€€€€€€€€“ö€‚� "

Now as mentioned in Example Hello World MFast Converted in Hex using Managed C++ Code "\\xC3\\x9D\\xC3\\xBF\\xE2\\x80\\x9D\\x32\\x30\\x31\\x38\\x31\\x30\\x30\\x39\\x2D\\x30\\x36\\x3A\\x34\\x39\\x3A\\x30\\x39\\x2E\\x36\\x36\\xC2\\xB1\\xC2\\xB1\\x1F\\x6A\\xC3\\x8F\\xE2\\x82\\xAC\\xE2\\x82\\xAC\\xE2\\x82\\xAC\\xE2\\x80\\x9A\\x5F\\x7F\\x7F\\xC3\\x80\\xE2\\x82\\xAC\\xC3\\xB4\\x43\\x4F\\x43\\x55\\x44\\x41\\x4B\\x4C\\x32\\x30\\x44\\x45\\x43\\x32\\x30\\x31\\xC2\\xB8\\x32\\x39\\x37\\x32\\xC2\\xB3\\xC3\\xB8\\x05\\x08\\x32\\x3F\\x49\\xC3\\x81\\xE2\\x82\\xAC\\xE2\\x82\\xAC\\xE2\\x82\\xAC\\xE2\\x82\\xAC\\xE2\\x82\\xAC\\xE2\\x82\\xAC\\xE2\\x82\\xAC\\x73\\xE2\\x80\\xA2\\xE2\\x82\\xAC\\xE2\\x82\\xAC\\xE2\\x82\\xAC\\xE2\\x82\\xAC\\xE2\\x82\\xAC\\xE2\\x82\\xAC\\xE2\\x82\\xAC\\xE2\\x82\\xAC\\xE2\\x82\\xAC\\xE2\\x82\\xAC\\xE2\\x80\\x9C\\xC3\\xB6\\xE2\\x82\\xAC\\xE2\\x80\\x9A\\x03\\xC3\\xA2\\xE2\\x82\\xAC\\xE2\\x82\\xAC"

Double backward slash for Escape Purpose in C++ which is Compulsory. Now decoder.decode fails when I pass this hex message but when i hard code it in String with single backward slash it works perfectly fine.

I will be great if you suggest solution

Exception Caught:
Throw in function unsigned char __thiscall mfast::fast_istreambuf::sbumpc(void)
Dynamic exception type: class boost::exception_detail::clone_impl
std::exception::what: Unknown exception
[struct mfast::tag_error_code *] = Buffer underflow